-24.81% is the change from 669 to 503
Calculation steps:
[( 503 - 669 ) ÷ 669] x 100 = -24.81%
Formula
Percentage change = [(503 - 669) / 669] x 100
Subtract the new number by the original number
503 - 669 = -166
-166 ÷ 669 = -0.24813153961136025
-0.24813153961136025 x 100 = -24.81%